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-LPETERS. FHOWUTHUGRAPHER, WASHINGTON. D. C.

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IMPROVEMENT nvY STEAM-Tanne.

The Schedule referred to in these Letters Patent making part of thesame.

To all whomtt may concer-n:

l l `Be it knownthatwe, LAMsoN PERKINS, J 0;.

jenen H. Monnromahd `CHARLES E. SAWYER, all of Boston, in thecouty ofSuffolk and State of Masi sachusetts, havenventedan Improvementih Steam-Traps, of which the, following is a full, clear, and exact description,reference being had to` the accomt panying thawing .making part of thisspecification, in which- Y t ,y `Figure l is a plan of' a portion `of a`waste or escape-pipe withI our` improved steam-trap applied "Figure 2`same. s

Figure 3 is `a perspective view of the end ot' the l plug ot' thevalvcor stop-cock, illustrating the appli cation of our improvement thereto.

is "a longitudinal section T'through the f Figure 4 is att-perspectiveview of the` elastic packing, which is applied to thefend of the'plugofthe valve.

` `Steam-traps `as heretofore constructed have been `objectionahle forthe reason that the plugs or seats of the valves `have been located on alinebelow the month of the escape-pipe, and hence have been in positionto be kept constantlyinider .the induence of hot watchin which they are,necessarilydminerscd, 4.and are, thus subject to more or less injurytherefrom."` v f i Plug and seats of valves made` of n'ietal are objecttionable, as they are sonnent. or destroyed by being tbrced'against eachother hycontraction and expanp sion, and also by the action ofthe steamand water, and when out `.it'order the iiow of water cannot be away `ot"the parts is avoided, and the desired end attained. A Y y '.loenableiothers skilled in the art to understand and use our invention wewill proceed to wdescribe the in auner in which we have carried it out.

4In the said drawing-J connected witha boiler for the` passage ot' steamfor heatingand'drying purposes, the said pipes being se` .A `the lowerone of 4a seriesof pipes (not shown)A cured by brackets', or otherwise,to the wall of'an Y apartment.

Bis a valve or stop-cock, the plug a of which is provided with ascrew-thread, by which it is turned.

in andfout against the outer end b of the pipe A,`

which forms the outlet for the water of condensation contained withinthe steam-pipes.l

The outer portion of the pipe A passes through a stuffing-box, O, and isfree to slide within the shell of the valve as it is lengthenedor.shortened by ex-` pansion or contraction. 1

-The end of the plug-a of the lstopfcock is provided with a recess, inwhich snugly tits an elastic or yieldingpacking, c, fig. 4, which formsthe seat or bearing for the end b ofthe pipe A, and this packingisformed of a composition that will withstand the action of the steam towhich it is exposed.

Soon after steam is admitted to the drying-pipes it begins to condense,the'Wat-er lilling the outer portion of the lowerpipe A, and it thenbecomes necessary to draw olf the water without permitting any waste lof steam.

To accomplish this vthe plug a is unscrewed by turn ing the hand-wheelI) so as to withdraw the elastic Y bwill come into contact with theelastic packing c on the end of theplug a, when. the escape ot the steamwill be immediately stopped. The water oilcondensat-ion will thencommence to fill thev end of the pipe A, contract-ing and shortening itso that its end t will be withdrawn ii'om the plug c, and the water willthen be free to 'escape through the pipe E, which is placed on a linenot above the surface of the plug c. V

When' the elastic packing c becomes worn out from constant use4 it maybe readily replaced at a tritling expense.- y i By the appllcation'tothe plug ofthe valve of a stea1ntrap of an elastic or yielding packing,c, thatwill withstand the action of steam, as above described, the plugthe flow of Water can be automatically' regulated with a great degree ofnieety; so that when the apparatus is onceadjusted it will not requirethe constant; a'ttention heretofore needed.

. We are aware that elastic balls have been used in steam-traps, and theelastic surface of these balls brought into direct Contact with themouth of: the steam-pipes, but the practical effect of the globular formot' this packing is objectionable, as it requires great exactness in themanufacture of the'se balls7 for should they not be perfect globes, witha perfect evenness in the elasticity of' their sides, the mouth of thepipe would not be closed.

My invention of a flat-surfaced socket will overcome this difficulty,and secure the object sought to he obtained with eas'eand certainty.

Witnesses:

N. W. STEARNS, W. J'. CAMBRIDGE.

